Official NHA Assessment

Race 3: BETWAY PINNACLE STAKES (Open)

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Line Horse
Choisaanada
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
7 / 10
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Minogue              4    52.0    1    0.00     3.5   107   93           93    -14
2    Texas Red            5    60.0    2    0.20     0.0   119   116          116   -3
3    Pressonregardless    4    52.0    3    0.70     3.5   104   98           98    -6
4    Choisaanada          2    56.0    4    0.75     0.0   112   112          112   +0
5    Red Bomber           2    50.5    5    1.75     0.0   90    100          100   +10
6    Cats Pajamas         3    60.0    6    2.45     6.0   120   106          110   -10
7    William Robertson    6    60.5    7    3.25     0.0   125   119          119   -6
8    Fiery Pegasus        3    56.5    8    5.75     6.0   119   97           109   -10
9    Mercantour           5    56.0    9    7.75     0.0   113   108          108   -5
99   Cosmic Speed         3    62.0    99   0.00     6.0   -     108          108   +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Minogue 107 112 93 +19 3.5 -
2 Texas Red 119 119 116 +3 0.0 -
3 Pressonregardless 104 109 98 +11 3.5 -
4 Choisaanada Line 112 121 112 +9 0.0
5 Red Bomber 90 86 100 -14 0.0 -
6 Cats Pajamas 120 119 110 +9 6.0 -
7 William Robertson 125 124 119 +5 0.0 -
8 Fiery Pegasus 119 119 109 +10 6.0 -
9 Mercantour 113 113 108 +5 0.0 -
99 Cosmic Speed - 122 108 +14 6.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points